Optical Fibre

PLEXUS design, install and manage the deployment of fibre optic cable projects throughout the UK and Europe, working with the industries leading equipment and component manufacturers to deliver standards compliant, scalable solutions.

Fibre optic cabling has many advantages over traditional copper, and is now the cable of choice for networks that can benefit from the additional speed and capacity it brings. Some of the advantages of optical fibre are:

  • Transmission Security – As optical fibre emits no electromagnetic energy there is no opportunity to intercept transmissions remotely
  • Bandwidth – Optical fibre has a much greater data capacity than copper, carrying more data further
  • Transmission Distance – Optical systems have much lower attenuation than copper systems meaning that signals can be transmitted further
  • No Risk of EMI or RFI – Fibre optic cables being primarily glass have no risk of electromagnetic or radio frequency interference

PLEXUS fibre technicians are experts in installation, splicing, termination, fault diagnosis, repair and testing. Our specialist fibre capabilities are enhanced when combined with our strategic partners to provide a complete fibre and ducting infrastructure. This benefits our clients by significantly reducing costs and timescales associated with sourcing multiple contractors.

When selecting the correct fibre optic cable for any installation the first question will be fibre type. This is dependent upon the transmission distance and the protocol being adopted. Transmission distance by application:

Network Application Wavelength
I
NM
OM1 62.5/125
M
OM2 50/125
M
OM3 50/125
M
OM4 50/125
M
OS1 SMF
M
OS2 SMF
M
10BASE-FL 850 2000 1514 1514 1514 - -
100BASE-FX 1300 2000 2000 2000 2000 - -
1000BASE-SX* 850 275 550 550 550 - -
1000BASE-LX* 1300 550 550 550 550 2560 5000
10G BASE-SR/SW* 850 32 82 300 300 - -
10G BASE-LX4* 1300 300 300 300 300 4200 10000
10G BASE-LR/LW* 1310 - - - - 4200 10000
10G BASE-ER/EW* 1550 - - - - 8900 22250
40G BASE-SR4* 850 - - 100 150 - -
40G BASE-LR4 1310 - - - - 4700 10000
100G BASE-SR10* 850 - - 100 150 - -
100G BASE-LR4 1310 - - - - 6300 10000
100G BASE-ER4 1550 - - - - 16000 40000

* Bandwidth limited at the length stated

Plexus is a corporate member of the FIA. The Fibreoptic Industry Association (FIA) promotes high standards of service within the industry and represents its members at national and international level.

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